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[Chemical Knowledge]：Tetrachloroethylene: A comprehensive understanding from manufacture to application

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Tetrachloroethylene is a colorless and transparent liquid with a chemical formula of C2Cl4 and a molecular weight of 165.83. Due to its wide application in industry, tetrachloroethylene has become one of the inevitable chemicals in people's lives.

1. Production

There are many methods for producing tetrachloroethylene, for example, a heating reaction of hydrochloric acid and tetrachloroethylene alkyl sodium, a chemical chlorinolysis reaction of tetrahydrofuran, and the like. Among them, vinyl chloride is an intermediate obtained from the oxidation of ethylene, which is of great significance for the manufacture of tetrachloroethylene.

2. properties

tetrachloroethylene is an extremely harmful chemical substance, its toxicity is very strong. At higher temperatures, tetrachloroethylene can be decomposed to form highly toxic gases such as hydrogen chloride and phosgene. Therefore, great care must be taken during use or storage.

In addition, the chemical properties of tetrachloroethylene are relatively stable and are not easily destroyed by chemical reactions. Under the action of high temperature and sunlight, tetrachloroethylene will decompose to produce toxic gases, so it cannot be exposed to the sun for a long time.

3. Application

Tetrachloroethylene is a chemical substance widely used in industrial production. Its application scope includes: cleaning agent, plastic, chemical fiber, refrigerant, disinfectant, drug synthesis and so on.

In terms of cleaning agents, tetrachloroethylene has excellent cleaning effect and is widely used in industrial cleaning. In plastic products, tetrachloroethylene is a necessary raw material for the manufacture of PVC (polyvinyl chloride). In chemical fiber, tetrachloroethylene is mainly used in the synthesis of polyester. In terms of refrigerants, tetrachloroethylene is a very common substitute for freon gas, which is widely used in refrigeration and refrigeration equipment. Tetrachloroethylene also has important applications in the synthesis of disinfectants and pharmaceuticals.

In general, tetrachloroethylene is an important industrial chemical with important applications in many fields. However, great care should be taken during use to avoid potential safety hazards.